公开(公告)号：US06724550B2

公开(公告)日：2004-04-20

申请号：US09955621

申请日：2001-09-19

申请人： Eng Hock Lim ,  Beng Theam Ko ,  Hweepeng Teo ,  Fong Kheon Chong ,  Myint Ngwe ,  Kah Liang Gan

发明人： Eng Hock Lim ,  Beng Theam Ko ,  Hweepeng Teo ,  Fong Kheon Chong ,  Myint Ngwe ,  Kah Liang Gan

IPC分类号： G11B502

CPC分类号： G11B5/012 ,  G11B5/09 ,  G11B20/24

摘要： A method for the adaptive dampening of a peak amplitude of a thermal asperity signal in a disc drive to minimize loss of read data integrity, including the steps of determining a peak-to-peak preamble signal amplitude for identifying an amplitude signal range of the peak amplitude of the thermal asperity signal; measuring the peak amplitude of the thermal asperity signal; separating the peak-to-peak preamble signal amplitude into substantially even portions for use in calculating a value of the amplitude signal range of the peak amplitude of the thermal asperity signal; calculating the value of the amplitude signal range of the peak amplitude of the thermal asperity signal for use in determining a dampening resistance used by a dampening circuit to adaptively dampen the peak amplitude of the thermal asperity signal; and activating the dampening circuit to dampen the peak amplitude of the thermal asperity signal.

摘要翻译： 一种用于自适应衰减磁盘驱动器中的热不平坦信号的峰值振幅的方法，以最小化读取数据完整性的损失，包括以下步骤：确定峰 - 峰前导信号幅度，以识别峰值的振幅信号范围 热凹凸信号的振幅; 测量热凹凸信号的峰值振幅; 将峰 - 峰前导信号振幅分离成基本上均匀的部分，以用于计算热不平坦信号的峰值幅度的振幅信号范围的值; 计算用于确定由衰减电路使用的阻尼电阻以自适应地抑制热凹凸信号的峰值振幅的热凹凸信号的峰值振幅的振幅信号范围的值; 并激活衰减电路以抑制热凹凸信号的峰值振幅。

公开(公告)号：US06693756B2

公开(公告)日：2004-02-17

申请号：US09894329

申请日：2001-06-27

申请人： Hweepeng Teo ,  Myint Ngwe ,  BengTheam Ko ,  FongKheon Chong ,  Kah Liang Gan

发明人： Hweepeng Teo ,  Myint Ngwe ,  BengTheam Ko ,  FongKheon Chong ,  Kah Liang Gan

IPC分类号： G11B503

CPC分类号： G11B5/09 ,  G11B5/012 ,  G11B33/14 ,  G11B2005/0008 ,  G11B2005/001 ,  G11B2005/0013 ,  G11B2005/0016 ,  G11B2005/0018

摘要： Apparatus and method for transferring data in a disc drive data handling system. A read/write head having separate write and read elements is used to write data to and transduce data from a disc recording surface. A preamplifier driver circuit applies write currents to the write element to write data to the recording surface and to apply a first read bias signal of selected, nonzero magnitude to the read element to transduce data from the recording surface. In response to the assertion of a write gate signal, the preamplifier driver circuit generates a second read bias signal of selected, nonzero magnitude and applies the second read bias signal to the read element while applying the write currents to the write element. This reduces the potential for damage to the read element due to cross-talk noise induced in the read bias signal from magnetic coupling between the read and write elements.

摘要翻译： 用于在盘驱动器数据处理系统中传送数据的装置和方法。 具有单独写入和读取元件的读/写头用于向盘记录表面写入数据并从盘记录表面转换数据。 前置放大器驱动器电路向写入元件施加写入电流以将数据写入记录表面，并将所选择的非零幅度的第一读取偏置信号施加到读取元件以从记录表面转换数据。 响应于写入门信号的确认，前置放大器驱动器电路产生所选择的非零幅度的第二读偏置信号，并将第二读偏置信号施加到读元件，同时向写元件施加​​写电流。 这就降低了读取元件由于在读取和写入元件之间的磁耦合引起的读取偏置信号中引起的串扰噪声的可能性。